K4: Difference between revisions
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''This page is incomplete.'' |
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K4 is the major dialect behind the primary implementation provided by [[KX Systems]]<ref>https://kx.com</ref>. The K4 spec is generally paired with kdb+, and Q, its accompanying query language. |
K4 is the major dialect behind the primary implementation provided by [[KX Systems]]<ref>https://kx.com</ref>. The K4 spec is generally paired with kdb+, and Q, its accompanying query language. |
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== History == |
== History == |
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K4 is the longest surviving dialect of K, due to Kx Systems' support of it for more than 20 years as of current date. |
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In 2018<ref>https://www.anaconda.com/blog/anaconda-and-kx-systems-partner-to-deliver-kdb-database-system-and-related-machine-learning-libraries</ref>, KX Systems released Fusion<ref>https://code.kx.com/q/interfaces/fusion/</ref>, an open source language integration project that was added alongside their existing IPC and C/C++ interfaces. |
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== Changes from K3 == |
== Changes from K3 == |
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Revision as of 11:20, 26 February 2022
| Developer | KX Systems |
|---|---|
| Released | 2000 |
|
| |
| Temporal types | yes |
| Table support | no |
| Prototypes | none |
|
| |
| Implemented in | C |
| Platforms | x86, ARM |
| Operating Systems | Windows, Linux, OSX |
| License | proprietary |
|
| |
| Website | https://kx.com |
| Documentation | Online Documentation |
K4 is the major dialect behind the primary implementation provided by KX Systems[1]. The K4 spec is generally paired with kdb+, and Q, its accompanying query language.
History
K4 is the longest surviving dialect of K, due to Kx Systems' support of it for more than 20 years as of current date.
In 2018[2], KX Systems released Fusion[3], an open source language integration project that was added alongside their existing IPC and C/C++ interfaces.
Changes from K3
Many changes can be seen from K3 to K4.
Primitive changes:
- % from reciprocal to square root
- ^ from shape/power to except/fill
- monadic @ from atom? to type
The system values (prefixed with an underscore) from K3 are no longer present in K4, which uses predefined names for system functions. Some other functions are prefixed with a ..